User zeb

95 votes

11 answers

13k views

Is it possible to capture a sphere in a knot?

asked Dec 7, 2009 at 9:34

51 votes

7 answers

12k views

Why are the characters of the symmetric group integer-valued?

asked Jan 3, 2010 at 23:32

32 votes

1 answer

1k views

Are there any integers which can't be written as a sum of two fourth powers minus a cube?

asked Jul 16, 2014 at 20:01

25 votes

8 answers

14k views

Linear Algebra Problems?

asked Feb 11, 2010 at 23:30

23 votes

2 answers

2k views

Five Front Battle

asked Jan 7, 2010 at 6:13

15 votes

1 answer

596 views

Geometry of numbers for three by three matrices?

asked Jul 6, 2013 at 19:08

13 votes

1 answer

773 views

Bipartite Nim-Geography

asked Mar 6, 2010 at 1:28

11 votes

2 answers

2k views

Can anyone analyze this misere game?

asked Jan 10, 2012 at 7:14

10 votes

0 answers

408 views

How large can the gcd of a pair of two-variable polynomials be?

asked Aug 4, 2014 at 8:17

10 votes

2 answers

431 views

Iterated sumset inequalities in cancellative semigroups

asked May 29, 2015 at 6:31

8 votes

0 answers

253 views

Are there analogues of real-valued measurability for larger powersets?

asked May 23, 2020 at 0:18

8 votes

1 answer

578 views

How many reals can we construct by iteratively writing down truth tables for ZFC?

asked Feb 6, 2021 at 3:14

7 votes

2 answers

703 views

Sturm chain analogue for exponential polynomials?

asked Nov 6, 2010 at 5:31

7 votes

1 answer

911 views

Best possible sieves for the jacobsthal problem, linear programming, and the prime 2

asked Jun 16, 2011 at 1:29

7 votes

1 answer

488 views

Is there a way to check if a relative Hilbert Scheme is reduced?

asked Dec 14, 2009 at 13:19

6 votes

1 answer

254 views

Is every permutation group on $n$ letters the symmetry group of a set of $n$ points in some euclidean space?

asked Mar 30, 2021 at 23:20

6 votes

2 answers

505 views

Does every finite free R-algebra have a basis starting with 1?

asked Nov 16, 2012 at 23:01

4 votes

2 answers

333 views

Can you randomly sample graphs with quadratic growth?

asked Nov 25, 2011 at 20:57

4 votes

2 answers

388 views

Is a "contraction space" always complete?

asked Apr 23, 2010 at 7:05

3 votes

1 answer

2k views

About the Shannon Switching Game

asked Jan 17, 2010 at 7:30

3 votes

2 answers

489 views

Lattice reduction on an orthonormal lattice?

asked Nov 3, 2012 at 0:02

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21 Questions

Is it possible to capture a sphere in a knot?

Why are the characters of the symmetric group integer-valued?

Are there any integers which can't be written as a sum of two fourth powers minus a cube?

Linear Algebra Problems?

Five Front Battle

Geometry of numbers for three by three matrices?

Bipartite Nim-Geography

Can anyone analyze this misere game?

How large can the gcd of a pair of two-variable polynomials be?

Iterated sumset inequalities in cancellative semigroups

Are there analogues of real-valued measurability for larger powersets?

How many reals can we construct by iteratively writing down truth tables for ZFC?

Sturm chain analogue for exponential polynomials?

Best possible sieves for the jacobsthal problem, linear programming, and the prime 2

Is there a way to check if a relative Hilbert Scheme is reduced?

Is every permutation group on $n$ letters the symmetry group of a set of $n$ points in some euclidean space?

Does every finite free R-algebra have a basis starting with 1?

Can you randomly sample graphs with quadratic growth?

Is a "contraction space" always complete?

About the Shannon Switching Game

Lattice reduction on an orthonormal lattice?